Elimination of spurious modes within quasiparticle random-phase approximation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405187" target="_blank" >RIV/00216208:11320/19:10405187 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=aq8-lW-7fr" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=aq8-lW-7fr</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.99.044307" target="_blank" >10.1103/PhysRevC.99.044307</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Elimination of spurious modes within quasiparticle random-phase approximation

Popis výsledku v původním jazyce

We suggest a generalized method for elimination of spurious admixtures (SA) from intrinsic nuclear excitations described within the quasiparticle random-phase approximation (QRPA). Various kinds of SA corrections are treated at the same theoretical ground. The known corrections are well reproduced. As relevant cases, we consider subtraction of SA related with (i) violation of the translational invariance (isovector E1 and isoscalar toroidal and compression E1 modes), (ii) pairing-induced nonconservation of the particle number (E2(K = 0) and E0 modes), and (iii) rotational invariance (E2(K = 1) and M1(K = 1) modes). The SA subtraction can be done at the level of QRPA states, electromagnetic responses, and even transition operators. The additional deformation-induced corrections for El excitations are proposed and shown to be essential for the compression isoscalar mode. The accuracy of the method is demonstrated by Skyrme QRPA calculations for axially deformed Sm-154.

Název v anglickém jazyce

Elimination of spurious modes within quasiparticle random-phase approximation

Popis výsledku anglicky

We suggest a generalized method for elimination of spurious admixtures (SA) from intrinsic nuclear excitations described within the quasiparticle random-phase approximation (QRPA). Various kinds of SA corrections are treated at the same theoretical ground. The known corrections are well reproduced. As relevant cases, we consider subtraction of SA related with (i) violation of the translational invariance (isovector E1 and isoscalar toroidal and compression E1 modes), (ii) pairing-induced nonconservation of the particle number (E2(K = 0) and E0 modes), and (iii) rotational invariance (E2(K = 1) and M1(K = 1) modes). The SA subtraction can be done at the level of QRPA states, electromagnetic responses, and even transition operators. The additional deformation-induced corrections for El excitations are proposed and shown to be essential for the compression isoscalar mode. The accuracy of the method is demonstrated by Skyrme QRPA calculations for axially deformed Sm-154.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

<a href="/cs/project/GA19-14048S" target="_blank" >GA19-14048S: Zkoumání nových vlastností jaderných elektromagnetických excitací</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review C

ISSN

2469-9985

e-ISSN

—

Svazek periodika

99

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

044307

Kód UT WoS článku

000464738300002

EID výsledku v databázi Scopus

2-s2.0-85064391682